5G technology and 'Big Tobacco'

It’s not unusual for investors to be blind-sided, but the effect can be unnerving nonetheless. For shareholders in the banks, think PPI and the billions paid out in compensation to borrowers and credit card holders. We could even cite the recent travails of Aviva’s (AV.) preference stock holders, though the insurer has subsequently reverted to damage limitation mode on the PR front. Doubtless, some would argue that in both these cases the risks posed to investors were foreseeable – and therefore addressable.